Another advantage of the OmniMech is a Clan invention known as C.A.S.E.. It is specially designed for OmniMechs. C.A.S.E. is an ammo explosion counter measure. Many OmniMechs are outfitted with armor that can slide out in certain positions to revealventilation holes. If ammo is positioned next to these ventilation holes, a C.A.S.E. computer may be installed in the OmniMech. These computers detect an internal ammo explosion and the moment such an explosion is detected it slides off the slideable armor pieces so that the explosion rushes out through the ventilation holes, causing minimal damage to the internal.

Most Clan Mechs were OmniMechs, it was known for the Clans to occasionally use standard Mechs. The most interchangeable OmniMechs of them all were the: